Change a CPN
Moving a part to a different company part number, with a record of why.
When you would do this
Rarely, and deliberately. A company part number is how everyone refers to a part, so changing one ripples outward.
The usual reason is that the part was filed in the wrong family: numbered under one category when it belongs in another, so the number tells people the wrong thing about what it is.
The fields
| Field | What it is for |
|---|---|
| Category | The family the new number is drawn from. |
| Subcategory | The bucket within that family. |
| CPN number | The number itself within that bucket. |
| Reason for CPN change | Why, chosen from your company's reason codes. |
| Notes | The detail the reason code cannot carry. |
The dialog shows the current number alongside, so you can see what is being replaced before you commit to it.
Before you change one
Other people are using this number
The CPN appears on BOM lines, purchase records and anything printed or exported that referenced it. Changing it does not reach back into a PDF a supplier already has, or a drawing with the old number on it.
Worth checking the Where Used tab first to see which products call for the part, and telling those teams.
The reason code matters
Someone will ask why this part's number changed, and the answer will not be obvious from the record alone. The reason code plus the notes are the whole explanation you leave behind. Write the notes as though you will not be available to ask.